Overview
The SN65HVD35DR is a 3.3-V full-duplex RS-485 driver and receiver produced by Texas Instruments. This device is part of the SN65HVD3x family, designed for RS-422 and RS-485 data transmission. It operates with a 3.3-V power supply and supports full-duplex bus communication with separate input and output pins. The SN65HVD35DR is packaged in a 14-pin SOIC (D) package and is characterized for ambient temperatures from –40°C to 85°C, with low power dissipation allowing operation up to 105°C or 125°C depending on the package option.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 14 | - |
| Operating Temperature Range | –40 to 85 | °C |
| Supply Voltage (VCC) | 3 to 3.6 | V |
| Signaling Rate | 1 Mbps | bps |
| Differential Load Resistance (RL) | 54 to 60 | Ω |
| High-Level Output Current (IOH) | –60 | mA |
| Low-Level Output Current (IOL) | 60 | mA |
| Junction Temperature (TJ) | –40 to 150 | °C |
| Standby Current | < 1 μA | μA |
Key Features
- 1/8 Unit-load option available, supporting up to 256 nodes on the bus.
- Bus-pin ESD protection exceeds 15-kV HBM.
- Optional driver output transition times for signaling rates of 1 Mbps, 5 Mbps, and 26 Mbps.
- Low-current standby mode: <1 μA.
- Glitch-free power-up and power-down protection for hot-plugging applications.
- 5-V Tolerant inputs.
- Bus idle, open, and short-circuit failsafe.
- Driver current limiting and thermal shutdown.
Applications
- Utility meters.
- DTE and DCE interfaces.
- Industrial, process, and building automation.
- Point-of-sale (POS) pins and networks.
Q & A
- What is the operating voltage of the SN65HVD35DR?
The SN65HVD35DR operates with a 3.3-V power supply.
- What is the maximum signaling rate supported by the SN65HVD35DR?
The SN65HVD35DR supports a signaling rate of up to 1 Mbps.
- What is the maximum number of nodes supported on the bus?
The SN65HVD35DR supports up to 256 nodes on the bus due to its 1/8 unit-load option.
- What is the standby current of the SN65HVD35DR when both the driver and receiver are disabled?
The standby current is less than 1 μA when both the driver and receiver are disabled.
- Does the SN65HVD35DR have ESD protection?
- What are the temperature ranges for the SN65HVD35DR?
- Is the SN65HVD35DR suitable for hot-plugging applications?
- What types of networks is the SN65HVD35DR designed for?
- Does the SN65HVD35DR have thermal shutdown protection?
- What is the package type and pin count of the SN65HVD35DR?
